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Redefining SW Amazonian chronologies and pottery use at the Teotonio site

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Bentley, McKenzie R. ; Becerra-Valdivia, Lorena ; Kater, Thiago ; Furquim, Laura Pereira ; Watling, Jennifer ; Almeida, Fernando ; Brandao, Kelly ; Chivall, David ; Pinheiro, Natalya Cristiana Pereira ; Linscott, Bethan ; Ma, Qian ; Mongelo, Guilherme ; Shock, Myrtle P. ; Sawakuchi, Andre Oliveira ; Mayle, Francis ; Neves, Eduardo Goes ; Ramsey, Christopher Bronk
Número total de Autores: 17
Tipo de documento: Artigo Científico
Fonte: JOURNAL OF ARCHAEOLOGICAL SCIENCE; v. 183, p. 9-pg., 2025-10-03.
Resumo

Teotonio is a pre-Columbian riverine archaeological site located in southwestern Amazonia, in a region with diverse cultural traditions and linguistic variety, and an archaeological record marking one of the oldest occupations in the Amazon. The site has a long history of nearly continuous human occupation spanning most of the Holocene, predicated by a stratigraphic sequence containing important pre-ceramic and ceramic traditions. As such, Teotonio offers a valuable opportunity to improve our understanding of the human landscape in southwestern Amazonia during the late Holocene. This work aims to provide a reliable chronology for Teotonio by producing new radiocarbon measurements and building a revised chronology using Bayesian chronological modelling. Through organic residue analysis (ORA), we run a pilot study to discern pottery vessel function according to ceramic tradition by characterising preserved lipid residues using supercritical fluid extraction and gas chromatography-mass spectrometry. Bayesian modelling estimates the start and end of the cultural sequence at Teotonio to 10540-9425 cal BP and 625-395 cal BP (or CE 1325-1555), respectively, with a total duration between 8840 and 9980 years. ORA results for the ceramics show the presence of palmitic and stearic acids and resinous diterpenoids in most samples. These preliminary findings align with ethnographic traditions observed in the region, whereby resins from local flora are used for ceramic surface treatment, fuel, and/or medicinal purposes-although more work is required for validation. Together, the updated chronology and pilot study results contribute to our understanding of cultural practices and their maintenance through time, as well as specific human-environment interactions in southwestern Amazonia. (AU)

Processo FAPESP: 19/07794-9 - Povos indígenas e o meio ambiente na Amazônia Antiga
Beneficiário:Eduardo Góes Neves
Modalidade de apoio: Auxílio à Pesquisa - Temático